tjh.dev
1From fa120ba1a02437c762fc6a37a60728cac380aa41 Mon Sep 17 00:00:00 2001
2From: =?UTF-8?q?Zsolt=20Vad=C3=A1sz?= <zsolt_vadasz@protonmail.com>
3Date: Sun, 11 May 2025 12:34:28 +0000
4Subject: [PATCH] v4l2-tracer: Allow building on systems using musl
5
6Signed-off-by: Zsolt Vadasz <zsolt_vadasz@protonmail.com>
7Message-ID: <4dgJekVdP7lLqOQ6JNW05sRHSkRmLLMMQnEn8NGUHPoHDn4SBkaGlHUW89vkJJu3IeFDAh3p6mlplTJJlWJx8V4rr62-hd83quCJ2sIuqoA=@protonmail.com>
8---
9 utils/v4l2-tracer/retrace.cpp | 24 ++++++++++++++++++++++++
10 1 file changed, 24 insertions(+)
11
12diff --git a/utils/v4l2-tracer/retrace.cpp b/utils/v4l2-tracer/retrace.cpp
13index 010936c0..0acce10c 100644
14--- a/utils/v4l2-tracer/retrace.cpp
15+++ b/utils/v4l2-tracer/retrace.cpp
16@@ -10,10 +10,14 @@ extern struct retrace_context ctx_retrace;
17 void retrace_mmap(json_object *mmap_obj, bool is_mmap64)
18 {
19 json_object *mmap_args_obj;
20+#if defined(linux) && defined(__GLIBC__)
21 if (is_mmap64)
22 json_object_object_get_ex(mmap_obj, "mmap64", &mmap_args_obj);
23 else
24 json_object_object_get_ex(mmap_obj, "mmap", &mmap_args_obj);
25+#else
26+ json_object_object_get_ex(mmap_obj, "mmap", &mmap_args_obj);
27+#endif
28
29 json_object *len_obj;
30 json_object_object_get_ex(mmap_args_obj, "len", &len_obj);
31@@ -46,16 +50,24 @@ void retrace_mmap(json_object *mmap_obj, bool is_mmap64)
32 return;
33
34 void *buf_address_retrace_pointer = nullptr;
35+#if defined(linux) && defined(__GLIBC__)
36 if (is_mmap64)
37 buf_address_retrace_pointer = mmap64(0, len, prot, flags, fd_retrace, off);
38 else
39 buf_address_retrace_pointer = mmap(0, len, prot, flags, fd_retrace, off);
40+#else
41+ buf_address_retrace_pointer = mmap(0, len, prot, flags, fd_retrace, off);
42+#endif
43
44 if (buf_address_retrace_pointer == MAP_FAILED) {
45+#if defined(linux) && defined(__GLIBC__)
46 if (is_mmap64)
47 perror("mmap64");
48 else
49 perror("mmap");
50+#else
51+ perror("mmap");
52+#endif
53 debug_line_info();
54 print_context();
55 exit(EXIT_FAILURE);
56@@ -116,10 +128,14 @@ void retrace_open(json_object *jobj, bool is_open64)
57 int fd_trace = json_object_get_int(fd_trace_obj);
58
59 json_object *open_args_obj;
60+#if defined(linux) && defined(__GLIBC__)
61 if (is_open64)
62 json_object_object_get_ex(jobj, "open64", &open_args_obj);
63 else
64 json_object_object_get_ex(jobj, "open", &open_args_obj);
65+#else
66+ json_object_object_get_ex(jobj, "open", &open_args_obj);
67+#endif
68
69 json_object *path_obj;
70 std::string path_trace;
71@@ -148,10 +164,14 @@ void retrace_open(json_object *jobj, bool is_open64)
72 mode = s2number(json_object_get_string(mode_obj));
73
74 int fd_retrace = 0;
75+#if defined(linux) && defined(__GLIBC__)
76 if (is_open64)
77 fd_retrace = open64(path_retrace.c_str(), oflag, mode);
78 else
79 fd_retrace = open(path_retrace.c_str(), oflag, mode);
80+#else
81+ fd_retrace = open(path_retrace.c_str(), oflag, mode);
82+#endif
83
84 if (fd_retrace <= 0) {
85 line_info("\n\tCan't open: %s", path_retrace.c_str());
86@@ -162,10 +182,14 @@ void retrace_open(json_object *jobj, bool is_open64)
87
88 if (is_verbose() || errno != 0) {
89 fprintf(stderr, "path: %s ", path_retrace.c_str());
90+#if defined(linux) && defined(__GLIBC__)
91 if (is_open64)
92 perror("open64");
93 else
94 perror("open");
95+#else
96+ perror("open");
97+#endif
98 debug_line_info();
99 print_context();
100 }
101--
1022.49.0
103